有以下程序
#include＜stdio.h＞
main()

struct STUchar name[9];char sex;double score[2];;
struct STU a="Zhao",’m’,85.0,90.0,b="Qian",’f’,95.0,92.0;
b=a;
printf("%s,%c,%2.0f,%2.0f\n",b.name,b.sex,b.score[0],b.score[1]);

程序的运行结果是______。

A．1,2
B．2,4
C．1,4
D．2,3

A．typedef struct int n;char c;REC;
REC t1,t2;
B．struct REC;
int n;char c;);
REC t1,t2;
C．typedef struct REC;
int n=0;char c=’A’;t1,t2;
D．struct
int n;char c;REC;
REC t1,t2;